I'm having some issues zeroing my 300BLK SBR. I have 2k of S&B 200gr subsonics and I can't get the a good zero for my rifle.

Specs:

8" BA Performance 1x7
1/3 Geissele MRO Mount
Trijicon MRO

I will never intend to shoot any target beyond 100 yards. Everything will be show between 35-100 yards. With my red dot/mount combo the sight height is measured at 3.07". I just want a zero to reliably hit body mass between 35-100 yards without having to guess holdover.

My ammo's ballistic specs are 854fps, .416 coefficient.